import java.util.Scanner;

public class Menu {

	public static void main(String[] args) {
		Scanner input = new Scanner(System.in);
		System.out.println("1:登录系统\n 2:退出");
		int choice = input.nextInt();
		switch (choice) {
		case 1:
			System.out.println("1:客户信息管理");
			System.out.println("2:购物结算");
			System.out.println("3:真情回馈");
			System.out.println("4:注销");
			System.out.println("请输入你的选择：");
			choice = input.nextInt();
			switch (choice) {
			case 1:
				System.out.println("客户信息管理");
				System.out.println("1：显示所有客户");
				System.out.println("2：添加客户");
				System.out.println("3：修改客户信息");
				choice = input.nextInt();
				switch (choice) {
				case 1:
					System.out.println("显示所有客户");
					break;
				}
				break;
			case 2:
				System.out.println("结算");
				break;
			case 3:
				System.out.println("回馈");
				System.out.println("幸运大放送");
				// ....
				break;
			}
			break;
		case 2:
			System.out.println("退出");
			break;
		}

	}

}
